213252313 has 4 divisors (see below), whose sum is σ = 213346980. Its totient is φ = 213157648.

The previous prime is 213252289. The next prime is 213252353. The reversal of 213252313 is 313252312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159845449 + 53406864 = 12643^2 + 7308^2 .

It is a cyclic number.

It is not a de Polignac number, because 213252313 - 2¹⁷ = 213121241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213252353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43870 + ... + 48487.

It is an arithmetic number, because the mean of its divisors is an integer number (53336745).

Almost surely, 2^213252313 is an apocalyptic number.

It is an amenable number.

213252313 is a deficient number, since it is larger than the sum of its proper divisors (94667).

213252313 is an equidigital number, since it uses as much as digits as its factorization.

213252313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94666.

The product of its digits is 1080, while the sum is 22.

The square root of 213252313 is about 14603.1610619071. The cubic root of 213252313 is about 597.4449806075. Note that the first 3 decimals are identical.

Subtracting 213252313 from its reverse (313252312), we obtain a palindrome (99999999).

It can be divided in two parts, 2132 and 52313, that added together give a palindrome (54445).

The spelling of 213252313 in words is "two hundred thirteen million, two hundred fifty-two thousand, three hundred thirteen".